Apress.Expert.Oracle.Database.Architecture.9i.and.10g.Programming.Techniques.and.Solutions.Sep.2005

CHAPTER 3 ■ FILES 87
6 (
7 TYPE ORACLE_LOADER
8 DEFAULT DIRECTORY data_dir
9 ACCESS PARAMETERS
10 (
11 records delimited by newline
12 fields
13 REJECT ROWS WITH ALL NULL FIELDS
14 )
15 LOCATION
16 (
17 'alert_AskUs.log'
18 )
19 )
20 REJECT LIMIT unlimited
21 /
Table created.
We can now query that information anytime:
ops$tkyte@ORA10G> select to_char(last_time,'dd-mon-yyyy hh24:mi') shutdown,
2 to_char(start_time,'dd-mon-yyyy hh24:mi') startup,
3 round((start_time-last_time)*24*60,2) mins_down,
4 round((last_time-lag(start_time) over (order by r)),2) days_up,
5 case when (lead(r) over (order by r) is null )
6 then round((sysdate-start_time),2)
7 end days_still_up
8 from (
9 select r,
10 to_date(last_time, 'Dy Mon DD HH24:MI:SS YYYY') last_time,
11 to_date(start_time,'Dy Mon DD HH24:MI:SS YYYY') start_time
12 from (
13 select r,
14 text_line,
15 lag(text_line,1) over (order by r) start_time,
16 lag(text_line,2) over (order by r) last_time
17 from (
18 select rownum r, text_line
19 from alert_log
20 where text_line like '___ ___ __ __:__:__ 20__'
21 or text_line like 'Starting ORACLE instance %'
22 )
23 )
24 where text_line like 'Starting ORACLE instance %'
25 )
26 /